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Correct interpretat...
Correct interpretation of nanofluid convective heat transfer
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- Buschmann, M. H. (författare)
- Institut für Luft- und Kältetechnik Dresden
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- Azizian, R. (författare)
- Massachusetts Institute of Technology
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- Kempe, T. (författare)
- Institut für Luft- und Kältetechnik Dresden
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- Juliá, J. E. (författare)
- Jaume I University
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- Martínez-Cuenca, R. (författare)
- Jaume I University
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- Sundén, B. (författare)
- Lund University,Lunds universitet,NanoLund: Centre for Nanoscience,Annan verksamhet, LTH,Lunds Tekniska Högskola,Värmeöverföring,Institutionen för energivetenskaper,Institutioner vid LTH,Other operations, LTH,Faculty of Engineering, LTH,Heat Transfer,Department of Energy Sciences,Departments at LTH,Faculty of Engineering, LTH
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- Wu, Z. (författare)
- Lund University,Lunds universitet,Värmeöverföring,Institutionen för energivetenskaper,Institutioner vid LTH,Lunds Tekniska Högskola,Heat Transfer,Department of Energy Sciences,Departments at LTH,Faculty of Engineering, LTH
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- Seppälä, A. (författare)
- Aalto University
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- Ala-Nissila, T. (författare)
- Aalto University,Loughborough University
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(creator_code:org_t)
- Elsevier BV, 2018
- 2018
- Engelska 28 s.
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Ingår i: International Journal of Thermal Sciences. - : Elsevier BV. - 1290-0729. ; 129, s. 504-531
- Relaterad länk:
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http://dx.doi.org/10... (free)
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https://doi.org/10.1...
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https://lup.lub.lu.s...
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https://doi.org/10.1...
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Abstract
Ämnesord
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- Engineers and scientist have a long tradition in trying to improve the thermophysical properties of convective heat carriers such as water and transformer oil. Technological developments of the last decades allow the dispersion of particle of sizes ranging between 10 and 100 nm in these liquids. In a large number of recent studies the resulting nanofluids have been reported to display anomalously high increase of convective heat transfer. The present study compiles experiments from five independent research teams investigating convective heat transfer in nanofluid flow in pipes, pipe with inserted twisted tape, annular counter flow heat exchanger, and coil and plate heat exchangers. The results of all these experiments unequivocally confirm that Newtonian nanofluid flow can be consistently characterized by employing Nusselt number correlations obtained for single-phase heat transfer liquids such as water when the correct thermophysical properties of the nanofluid are utilized. It is also shown that the heat transfer enhancement provided by nanofluids equals the increase in the thermal conductivity of the nanofluid as compared to the base fluid independent of the nanoparticle concentration or material. These results demonstrate that no anomalous phenomena are involved in thermal conduction and forced convection based heat transfer of nanofluids. The experiments are theoretically supported by a fundamental similarity analysis of nanoparticle motion in nanofluid flow.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Maskinteknik -- Energiteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Mechanical Engineering -- Energy Engineering (hsv//eng)
Nyckelord
- Coil heat exchanger
- Convective heat transfer
- Counterflow heat exchanger
- Newtonian nanofluids
- Pipe
- Plate heat exchanger
- Twisted-tape
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